Lots of terrain.
Too many people and prices are out of control
Whistler is great. Expect lots of people that means on holidays and on good snow days the lift lines are long, I have waited as long as 45 minutes. The other thing that is out of control is the price at any restaurant. Expect to pay about $20 for nachos and that the for the basic, if you start adding say meat it will cost another $10. The portions are big but $20 for chips and cheese come on. There is lots to do in the summer and in the winter just be prepared to pay more than what you expect for everything.